Valve-facing tool



Feb.27,192s. I 1,446,856. C. R. OTIS.

VALVE FACING TOOL.

man sEPT.12-.19zx.

Patented Feb. 27, 1923.

...UNITED g N massa PATENT:

' CHANDLERR. OTIS, GF SAN FRANCISCQCALIFORNIA.

. VALVE-FACING TOOL.

'Appueatin ined' sepemberiz, 1921. seriailio. 499,906.

To all wiz-m it .may concern:

`r Be itrknoivn that'; CHANDLER R. O'rrs,y a'

l citizen of the United States, residing at San 'gle' betweentwov framesor, rings; the latter being held'iniixfedrelation,V but in thistype oftool the. facinggelements are not adjustable, cannot readilyconform tothe surfaces being...treatedv` and j are.limited to use on valves of agivensize, a different tool for each sizeof valveV beingr required."There, is alsofa similar toolin i'vliich pin like facing elements, Aorf'files arel universally movable andrevolvable l.upon a Airing forsupporting tllfesa'ie,4 but tools of ithiefcharacter are objec'tionablle.andvineflicient7V dueto the ten dency ofthe*` facingmembers to drag 'When being. rotated between'v the ,opposedAV faces ofthevalve, and its seat, 'This'. dragging4 tendency causesl the facingelements to be ldisposed at such angles tothe opposed vfacesof the valveaudits seat, that an uneven,.inac curate and.4 ineffective" facingaction occurs.

It is the 'primary object of my' invention to overcome the difficultiesand objections'abovenoted and I accomplish this lbv' providing a simpleandyinexpensive tool whichr Vconsists .of-atplur'allty of l'fil-es' orfacing elements grev'olvablyz supported .at their innerV ends dnly, uponaring insuch'mannenthatthe adjustment of said "members is limited` tomovement inthe path of radial planes, erin other` words,fsaid' filesmayr be moved verti'callyfbut Vare 'preile'ntedfromflateral movemgjit-,vjvvheijeby 'the facing elements V-Will fau-V "torriati'callyYadjust ,themselvestol "valves of AdiHerentsi'zes. and ivillA bemaintained 'inh position 'radial to the facesfoftlie-'valve i and'seatengagedthereby.v

' `l.Another'object ofthe invention to' prolvide "atool 'of thecharacter" described vwhich includes '-"means l"for coirfpensating forthe leverage action onthe facing elementsfankll subsequent 'lifting up rof the supporting frame or ring, lWherebyfa positiveand/aoy curatevcontactof tliefacingjelements ivithf the'v opposedfaces of the valve.and seat isassured and a more accurate .resurfacingthus provided for. Inthe devices ofthe prior fart`,

the down pressure on`tlie valve'effect'eddun ing the facing operationofthe valveptliru` the, inclined Working yfacie ofthe valve, has'atendency to effect a leverage action onfthe facing elements whichfulcr'um 'upntheup i per edge of the valve seat. fThisleverage luisatendencyto lift 11p-.the supporting frame or ring and' as a resultofthisaction,I the facingelements are vnot engaged "thruout` with theopposed surfaces of the valveand its seat and an uneven andinaccurateresurffacing, is produced.v Thus; thefmeansabove' referredto preventsthis inaccuracy in va-lve` facing tools of thefcharacterldefined. I

Thev invention possessesother advantages and features some Iof which,livithtlie foregoing will be set forth at' lengthinffthel followingdescription. A'Where vIfshall outline' 'iii full 'that form vof the`invention whichv Ilhave selected for illustration inth'edravvingsac!companying andA forming a'rpajrt of thel present specification.v In-saiddravvings Ijhave shown one form. of jtlie .construction rofinvention, but it is to be 4uridelrstoodthat' I do not limit `myself `tosuch' form since "the invention as enpressed inthe'claimsfmay beembodied in a plurality of forms.

l ReferringA togtlic-i drawings:

Fig.` 1 representsa'fragmentary"vei'tic'al sectional view'of alvalveseat showing H the valve and devlce of my invention 1n side elevationand asit would appear When'm use.

Fig. 2 is a top plan view of the tool ofthis l invention.

'Figf' 4*is a; vertical sectional vieivffofthe tool showi ng' the facingelements f inV dotted lines. .l

i'. Fg- 4 5S: a' detail* sectional" -v-ew- -f- 13h e ringi`f0r vrevelvaloly?:supporting"the :"'fafcing-j the path of radial planes.

n 'Fig'. y"5' .iszan'fenlar'ged -`fra"f ginentary.sec#v tionalI lview'showingfthe device 'asjit iv iid appear in usefinf fulllinesA andffindotted linesthe ,position tliatthe facing n.ieinlfie-y;

would" assumel l'if the 'coil' spiingWere-f'no't i employed.l f u ;v Inthe accompanyingdratvingsjjlfdesig y nates- 'an annular `valveseat; 27a'valvev` 'havannularface of the member 10.

ing an inclined face 3 adapted to engage the seat, 4 the valve stem and5 a spider in which the stem 11 isreciprocally mounted.

The tool of this invention comprises an annular member 6 which isadapted `to surround and be slidable upon the valve stem so as todispose rotatable facing elements 7 carried thereby in position toengage between the opposed faces of the valve and" its seat. The body 6comprises a cylindrical lmember 8 having an annular lateral flange 9upon its upper end.' Mounted upon the upper side of the flange 9 is anannular substantially frustro-conical member 1 0 having a base flangek11 resting upon the flange 9.

Mounted upon the flange 11 is an annular guide turret or ring 12 whichis secured in position by screws 13 extended thru the flanges 9 and 11and into said ring 12. The inner surface of the ring or member 12 isspaced circumferentially from the inclined i mit of free-rotation of themembersinthe openings 14. Toprevent lateral movement of themembers andto limit their movement to the path of radialplanes, said ring is formed.with a plurality of vertical radial recesses or slots 16, oppositesides of which engage opposite sides ofthe membersl so as to preventlateral movementbut permit vertical movement of said-members 7.

A helical expansion spring 17 is mounted within the member 8 and engagesat its seat.

lower end a groove 4orshoulder 18 to limit downward movement of thespring, the upper end of the spring. terminating at a point slightlyabove the upper side of the ring 12m Operation.

After removing the valve,'tlie body portion 6 is slipped over the steinso as to surround the same and is moved upwardly so that the spring willengage the under side of the valve.v The valve is then dropped intoplace with'relation to its seat and the facing elements or 'files 'Twill assume a poi sitionshown inFig.v 1 equally engaging opposed facesofand `radial to the valve and y ternary manner and thevresurfacingaction is commenced. As the "valve is turned the facing members arerotated on their own axes and areA carriedaround with the valve and stemduring. the rotativevmovement of The mein-y only.

The valve is then turned inu the 'eusinceste such elements. Thesupporting of `the bod5r 6 upon the stem is effected by engagement ofthe members Tbetween the valve and its seat and any tendency to effect aleverage action thru the Said member 7, so as to lift the body member 6,is overcome by the spring 17 which is under compression when the deviceis in operation. The spring- 17 f tends to push downwardly on the body 6so as to oppose this leverageaction and such action is therebycompensated so that the yfacing` elements are maintained in equal andproper engagement with the'opposed faces ofthe valve and its sea-t.Continued yrotation of thevalve thru a short intervalof time'will causean accurate and effective facing of the valve and seat'simultaneously.

By having facing means capable of movement or adjustment only in thepath of radial planes, said members are prevented from assumingirregular inclined positions between the opposed faces of the valve andits seat and are maintained in positionsra-l dial to the valve andseat.` thereby insuring accuracy of resurfacing. This'movement oradjustment of the facing membersy permits of the use of aL facingV toolfor `valves of different sizes, since kthe said members willautomatically accommodate .themselves to equall engagement with theVopposed faces of thevalve and vits seat.` It will thus be seen that thetoolof my invention may be encotively used wthvalvesof various sizes;

Iclaimr 1. A valve'facing tool comprising facing members adapted to bedisposed between a lvalve and its seat and means rotatably sup-l portingsaid. membersy permitting adjust-A ment thereof in the pathsl of radial.planes and preventing lateral adjustment ofsa'id members relative tosaid means. f .Y

2. Afvalve facing toolcomprising a plurality of members havingperipheral facing ico surfaces adapted to engage with thek opposed facesof a valve and its seatand a member on which said members are revolvableupon their own axes andare adjustable only in the `paths of radialyplanes. 3. :A valve facing tool comprising a plurality of facing membershaving cylindrical portions formed with peripheral facing sur` faces anda member in which said. facing members are rotatably joined so asto moverelative to said inemberfin a' vertical plane e'. A valve facing toolcomprisingl alpha rality of facing members adapted to simultaneouslyengage with theopposedfaces of a valve and its seat and a member adaptedto surround `the stem of. aJ valve, having openings thereinA in whichlsaid yfacing meinbers are revolvable Aand havingradial slots in whichsaidv facing vmembers are movable.

5. A.' valve .fac-ing tool comprising a plurality of facingmembersadaptedv to simultai'se . valve and its seat,"means rotatablysupportneously engage and rotate between opposed faces of a valve andits seat, and a membery rotatably supporting said members and upon whichsaid members are adjustable in one plane only.

6. A valve facing tool comprising facing members adaptedl to be disposedbetween a ing said members permitting adjustment thereof in the paths ofyradial planes and preventing lateral adjustment of said membersrelative to said means anda spring on said means arranged to yieldinglyengage the' valve. l

7. A valve facing tool comprising a plurality of facing members adaptedto simul-,l

taneously engage and rotate between opposed faces of a valve and itsseat, amember rotatably ksupporting said members and upon which saidmembers are adjustable in one plane only and a springgcarried by saidsupporting member and arranged to engage the valve so as to inoperation. l j n v 8. A valve facing tool comprising a mem# ber having aplurality of radial openings therein, pin-like projecting kmembersrevolvable in said openings and a spring `car-v y ried by and extendingabove said member. 30

9. A- valvefacing'tool comprising a member having a plurality ofopenings therein,

compress when 4the'tool is p 'i justably supporting said members andmaiiitaining them 1n; position radial to the valve regardless of theadjustment thereof.

yCHANDLER oiis

